Joints of the Upper Limb II: Wrist & hand

Question 1

Carpal Arch (Carpal Tunnel)

Answer 1

As the Median nerve reaches carpal tunnel, moves from a position between FD superficialis and FD profundus to a position superficial to FD superficialis

Question 2

Joints of Wrist and Hand

Answer 2

Wrist (radiocarpal joint)

Intercarpal (between carpals)

Carpal-metacarpal joint

Metacarpophalangeal joint

Phalange and interphalangeal joints

Question 3

Radiocarpal and Intercarpal Joints

Answer 3

Radius: prox. carpal row (scaphoid and lunate)

Midcarpal joint = joint between distal carpal row and proximal carpal row

Question 4

Flexion at Wrist

Answer 4

40% occurs at radiocarpal joint

60% at midcarpal joint

Question 5

Extension of Wrist

Answer 5

33% occurs at midcarpal joint

67% at radiocarpal joint

Question 6

Abduction (radial deviation)

Answer 6

mostly at midcarpal joint

15-25 degrees

Question 7

Ulnar deviation (adduction at wrist)

Answer 7

mostly at midcarpal joint

30-45 degrees

Question 8

Ligaments of the Wrist (check slide 51)

Answer 8

Transverse carpal

Ulnar collateral

Sacciform recess

Radial collateral

Palmar Radiocarpal

Question 9

Ligaments of the Wrist, Hand, Digits

Answer 9

Collateral (radial, ulnar, phalangeal) ligaments

Carpal ligaments

Metacarpal ligaments

Carpometacarpal ligaments

Palmar ligaments

Intermetacarpal ligaments

Question 10

Review Extensor Hood

Answer 10

Review

Question 11

Osteology of Hand and Wrist

Answer 11

Carpals (wrist) 8 bones

Metacarpals (hand) 5 bones

Phalanges (fingers) 14 bones
5 digits
3 segments
thumb only has 2 segments